Organic electroluminescent element, material for said element, and light-emitting device, display device, and illumination device using said element

Abstract

An organic electroluminescent element using a compound represented by the general formulae (I)-(IV), as disclosed herein, emits dark blue light and exhibits good chromaticity at a wide range of concentrations of light emitting materials.

The invention claimed is: 
     
       1. An organic electroluminescent element comprising:
 a substrate; 
 a pair of electrodes including an anode and a cathode, disposed on the substrate; and 
 at least one organic layer including a light emitting layer, disposed between the electrodes, 
 wherein at least one kind of compound represented by any one of the following General Formulae (I) to (IV) is contained in any layer of the at least one organic layer: 
 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein R 1  to R 37  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 1  to R 37  are not bonded to each other to form a ring; X 1  to X 32  each independently represents a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61  to R 65  each independently represent a hydrogen atom or a substituent; A 1  to A 38  each independently represents CR 66  or N; R 66  represents a hydrogen atom or a substituent, and when two adjacent groups out of A 1  to A 38  are CR 66 , the two R 66 's may be bonded to each other to form a ring structure; 
         wherein when X 1  and X 2  are the same, X 1  and X 2  are not NR 63  or S; and 
         wherein when X 31  and X 32  are both NR 63 , at least one R 63  is not H. 
       
     
     
       2. The organic electroluminescent element according to  claim 1 , wherein at least one kind of compound represented by the General Formula (I) or (II) is contained in any layer of the at least one organic layer. 
     
     
       3. The organic electroluminescent element according to  claim 1 , wherein the molecular weight of the compound represented by any one of the General Formulae (I) to (IV) is 800 or less. 
     
     
       4. The organic electroluminescent element according to  claim 1 , wherein the organic layer containing the compound represented by any one of the General Formulae (I) to (IV) is formed by a vacuum deposition process. 
     
     
       5. The organic electroluminescent element according to  claim 1 , wherein the light emitting layer is formed by a wet process. 
     
     
       6. A light emitting device using the organic electroluminescent element according to  claim 1 . 
     
     
       7. A display device using the organic electroluminescent element according to  claim 1 . 
     
     
       8. An illumination device using the organic electroluminescent element according to  claim 1 . 
     
     
       9. The organic electroluminescent element according to  claim 1 , wherein at least one kind of compound represented by the General Formula (II) is contained in any layer of the at least one organic layer. 
     
     
       10. The organic electroluminescent element according to  claim 9 , wherein the compound represented by the General Formula (II) is a compound represented by the following general formula (V): 
       
         
           
           
               
               
           
         
         wherein R 41  to R 47  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 41  to R 47  are not bonded to each other to form a ring; R 48  to R 55  each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 48  to R 55  may be bonded to each other to form a ring; X 41  and X 42  each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61  to R 65  each independently represents a hydrogen atom or a substituent. 
       
     
     
       11. The organic electroluminescent element according to  claim 10 , wherein in the General Formula (V), X 41  and X 42  each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O. 
     
     
       12. The organic electroluminescent element according to  claim 10 , wherein in the General Formula (V), X 41  and X 42  are each independently represented by any one of CR 61 R 62 , NR 63 , and O, and X 41  and X 42  represent different linking groups. 
     
     
       13. The organic electroluminescent element according to  claim 10 , wherein in the General Formula (V), at least one of R 41  to R 55  and R 61  to R 65  is a substituent having any of a fluorine atom, an alkyl group, a silyl group, and an amino group. 
     
     
       14. The organic electroluminescent element according to  claim 1 , wherein at least one kind of compound represented by the General Formula (I) is contained in any layer of the at least one organic layer. 
     
     
       15. The organic electroluminescent element according to  claim 14 , wherein the compound represented by the General Formula (I) is represented by the following General Formula (VI) 
       
         
           
           
               
               
           
         
         wherein R 71  to R 77  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 71  to R 77  are not bonded to each other to form a ring; R 78  to R 85  each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 78  to R 85  may be bonded to each other to form a ring; X 51  and X 52  each independently represents a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61  to R 65  each independently represents a hydrogen atom or a substituent; 
         wherein when X 51  and X 52  are the same, X 51  and X 52  are not NR 63  or S. 
       
     
     
       16. The organic electroluminescent element according to  claim 15 , wherein in the General Formula (VI), X 51  and X 52  each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O. 
     
     
       17. The organic electroluminescent element according to  claim 15 , wherein in the General Formula (VI), X 51  and X 52  are each independently represented by any one of CR 61 R 62 , NR 63 , and O, and X 51  and X 52  represent different linking groups. 
     
     
       18. The organic electroluminescent element according to  claim 15 , wherein in the General Formula (VI), at least one of R 71  to R 85  and R 61  to R 65  is a substituent having any of a fluorine atom, an alkyl group, a silyl group, and an amino group. 
     
     
       19. The organic electroluminescent element according to  claim 1 , wherein the compound represented by any one of the General Formulae (I) to (IV) is contained in the light emitting layer. 
     
     
       20. The organic electroluminescent element according to  claim 19 , wherein the compound represented by any one of the General Formulae (I) to (IV) is a light emitting material contained in the light emitting layer. 
     
     
       21. The organic electroluminescent element according to  claim 20 , further comprising a host material in the light emitting layer. 
     
     
       22. The organic electroluminescent element according to  claim 21 , wherein the host material has a hydrocarbon fused ring structure having 10 to 50 carbon atoms. 
     
     
       23. The organic electroluminescent element according to  claim 21 , wherein the host material has an anthracene skeleton. 
     
     
       24. A material for an organic electroluminescent element, which is a compound represented by the following General Formula (V′): 
       
         
           
           
               
               
           
         
         wherein R 41  to R 47  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 41  to R 47  are not bonded to each other to form a ring; R 48  to R 55  each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 48  to R 55  may be bonded to each other to form a ring; X 41  and X 42  each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O, R 61  to R 65  each independently represent a hydrogen atom or a substituent. 
       
     
     
       25. A material for an organic electroluminescent element, which is represented by the following General Formula (VI′): 
       
         
           
           
               
               
           
         
         wherein R 71  to R 77  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 71  to R 77  are not bonded to each other to form a ring; R 78  to R 85  each independently represent a hydrogen atom or a substituent, and two adjacent groups out of R 78  to R 85  may be bonded to each other to form a ring; X 51  and X 52  each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O; R 61  to R 65  each independently represents a hydrogen atom or a substituent; 
         wherein when X 51  and X 52  are the same, X 51  and X 52  are not NR 63  or S. 
       
     
     
       26. A compound for use in an organic layer of an organic Electroluminescent device represented by anyone of the following General Formulae (I) to (IV) 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein R 1  to R 37  each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 1  to R 37  are not bonded to each other to form a ring; X 1  to X 32  each independently represents a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61  to R 65  each independently represent a hydrogen atom or a substituent; A 1  to A 38  each independently represents CR 66  or N; R 66  represents a hydrogen atom or a substituent, and when two adjacent groups out of A 1  to A 38  are CR 66 , the two R 66 's may be bonded to each order to form a ring structure; 
         wherein when X 1  and X 2  are the same, X 1  and X 2  are not NR 63  or S; and 
         wherein when X 31  and X 32  are both NR 63 , at least one R 63  is not H.